红宝石 |字符串 * 方法

String# *是 Ruby 中的 String 类方法，用于返回包含接收者整数副本的新字符串。这里，整数必须大于或等于 0。

Syntax: str * Integer

Parameters: Here, str is the required string and integer is the number of copies.

Returns: This method returns the String containing integer copies of the receiver.

示例 1：

# Ruby program to demonstrate
# the * method
     
# Taking a string and
# using the method
puts "Ruby " * 4
puts "Hey " * 2

输出：

Ruby Ruby Ruby Ruby 
Hey Hey 

示例 2：

# Ruby program to demonstrate
# the * method
     
# Taking a string and
# using the method
puts "Hello " * 0
puts "Copy " * 5

输出：

Copy Copy Copy Copy Copy